document.write( "Question 700388: the weekly wages of John and Stephanie are in the ratio 5:3. their weekly expenditures are in the ration 9:5. each saves $30 dollars a week, find their weekly wages. \n" ); document.write( "
Algebra.Com's Answer #431886 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! the weekly wages of John and Stephanie are in the ratio 5:3. \n" ); document.write( " their weekly expenditures are in the ration 9:5. each saves $30 dollars a week, find their weekly wages. \n" ); document.write( ": \n" ); document.write( "Let x = the multiplier for their wages, then: \n" ); document.write( "5x = J's wages \n" ); document.write( "3x = S's wages \n" ); document.write( "; \n" ); document.write( "Let y = the multiplier for their expenditures, then \n" ); document.write( "9y = J's expend \n" ); document.write( "5y = S's expend \n" ); document.write( ": \n" ); document.write( "Write an equation for each \n" ); document.write( "5x - 9y = 30 \n" ); document.write( "3x - 5y = 30 \n" ); document.write( ": \n" ); document.write( "Use elimination here multiply the 1st equation by 3, the 2nd by 5 \n" ); document.write( "15x - 27y = 90 \n" ); document.write( "15x - 25y = 150 \n" ); document.write( "------------------subtraction eliminates x, find y \n" ); document.write( "-2y = -60 \n" ); document.write( "y = +30 is the multiplier for expenses \n" ); document.write( "Find x \n" ); document.write( "5x - 9(30) = 30 \n" ); document.write( "5x - 270 = 30 \n" ); document.write( "5x = 30 + 270 \n" ); document.write( "5x = 300 \n" ); document.write( "x = 300/5 \n" ); document.write( "x = 60 is the multiplier for wages \n" ); document.write( "Then \n" ); document.write( "5(60) = $300 is J's wages \n" ); document.write( "3(60) = $180 is S's wages \n" ); document.write( " |